This happens sporadically. I go the the VCS menu and run Git/Pull and the git process completely hangs.

I am unable to run any shell commands in the Terminal either because the OS X Terminal app completely hangs as well.

Other apps, including PyCharm continue to work (but the Terminal, Activity Monitor, and the Git Pull itself are all completely stuck). The only way out is to hard reboot my computer. Doesn't happen every time I pull, but frequently enough that I have to hard reboot at least once a week.

Here are the log entries for today. The log almost makes it looks like the pull worked, but my computer is in a broken state.

Thank you. Yeah, I meant the native/built-in SSH setting. I have installed git 2.18.0 from git-scm.com and changed the path to the git executable in PyCharm settings. Previously it was using /usr/bin/git (perhaps from XCode as you mentioned) which was version 2.10.1. I'll have to try it out for a while to see if the hangs stop.